Hanger for shaking-screens.



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P. A. VAN SICKLE.

HANGER FOR SHAKING SCREENS.

APPLICATION FILED 0CT.12, 1914.

Patented June 15, 1915.

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PAUL ABRAHAM VAN SICKLE, 0F BRANTFORID, ONTARIO, CANADA, ASSIGNOR TO MASSEY-HARRIS COMPANY, LIMITED, OF TORONTO, ONTARIO, CANADA.

HANGER FOR SHAKINGr-SCREENS.

Specification of Letters Patent.

Patented June 15, 19:15.

Application filed October 12, 1914. Seria1 No. 866,268.

To all whom it may concern:

Be it known that I, PAUL ABRAHAM VAN SIcKLn, of the city of Brantford, in the Province of Ontario, Canada, a subject of the King of Great Britain, have made certain new and useful Improvements in Hangers for Shaking-Screens, of which the following is a specification.

This invention relates to vibratory screens specially adapted for use with grain grinders and the like to screen the grain before it passes to the grinding mechanism, and my object is to devise simple and convenient means for quickly adjusting the inclination of the screen at any time Whether the apparatus is in use or not.

I attain my object by supporting one end of the screen by means of a flexible hanger formed by a single strap which passes around guides on the frame and is connected to a horizontally journaled roller by being passed through a slot in the same and around which it is adapted to be wrapped in opposite directions bythe rotation of the roller. The roller is connected to a hand lever provided with means for holding it in any position to which it may be rocked.

The construction is hereinafter more specifically described and illustrated in the accompanying drawings in which- Figure 1 is a side elevation of part of a feed grinder provided with my improvements; Fig. 2 a front elevation of part of the same; and Fig. 3 an enlarged vertical section of the hanger adjustment.

In the drawings like numerals of reference indicate corresponding parts in the difierent figures.

1 is the frame of the feed grinder on which is supported the hopper 2 above the vibratory screen 3. This screen is of ordinary construction and requires no detailed description or illustration. The rear end is pivotally connected to a vertical rod 4 passing through a part of the frame and having a nut 5 screwed thereon resting on top of the frame. This connection permits of avertical rocking movement of the screen as well as a laterally vibratory movement. The vibratory movement is imparted from a crank shaft 6 journaled on the frame provided at its forward end with a wrist pin 7 on which is journaled a connecting piece 8 having a hole therein through which passes the connecting rod 9 which may be adjustable in said hole by' means of a set screw 10. This connecting rod is suitably connected at its other end to the under side of the screen. The important features of my invention are lncluded in the parts I now describe.

A flexible strap 11 is secured at each end to the opposite sides of the screen 3. This strap passes over the guides 12 on the frame and through a slot 17 in a roller 13 journaled on the frame. It is evident that by rotating this roller that the strap may be wrapped on the roller in opposite direc tions so that the left hand end of the strap is pulled to the right and the right hand end of the strap to the left, or vice versa, thus lengthening or shortening the operative portions of the strap which form the hangers for the outer end of the screen.

To move the roller and secure it in the position to which it is moved, I provide the following means :A short hand lever 14 1s secured to the roller. This lever projects through a slot in a quadrant 15 secured to the frame of the apparatus. The end of the lever is screw threaded and a nut 16 is screwed thereon. This nut is suitably shaped for engagement by the fingers so that it may be screwed down to frictionally en gagethe outer surface of the quadrant l5 and to hold the hand lever to a position to which it has been moved.

The adjustment it will be seen may be quickly made with one hand at any time Whether the machine be running or not so that the inclination of the screen may be changed at any time as may be necessary.

It is difiicult to secure leather straps equally stretchable at all parts of their length. With my arrangement any necessary adjustment to provide for unequal stretching can be made by sliding the strap through the slot in the roller so that each end of the strap bears its proper share of the weight of the screen.

What I claim as my invention is:

1. The combination with a vibratory screen and a suitable supporting framework of an adjustable support for the screen comprising a flexible strap secured at each end to the screen to form a pair of flexible hangers, a roller journaled on the frame and provided with a slot through which said strap passes so that by rotating the roller it may be wrapped thereon in opposite directions, a hand lever connected to said roller, a slotted quadrant on the frame, the said hand leverprojecting through said slot, and a hand nut screwed on the hand lever adapted to clamp the lever to said quadrant.

2. The combination with a vibratory screen and a suitable supporting framework of an adjustable support for the screen comprising a flexible strap secured at each end to the screen to form a pair of flexible hangers, a roller journaled on the frame and provided with a slot through which said strap passes so that by rotating the roller it may be wrapped thereon in opposite directions, a hand lever connected to said roller, a quadrant on the frame and means 15 for locking'the lever to the quadrant.

Dated at Brantford this fifteenth day of August A. D. 1914;

PAUL ABRAHAM VAN SICKLE. In the presence of-- ELSIE WILMoT, STANLEY E. BUCK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents,

Washington, D. G. 

